Final answer:
The symptom not typically associated with family grief in extrafamilial relationships is 'Improved sleep quality' since grief commonly disrupts sleep patterns rather than improving them.
Step-by-step explanation:
Symptoms of family grief in extrafamilial relationships often involve a range of emotional and physical reactions, such as increased irritability, difficulty concentrating, and changes in appetite. In the context of grief, it is uncommon for someone to experience an improvement in sleep quality. This could happen, but typically, during a grieving process, individuals tend to have interrupted sleep or lower sleep quality due to the stress and anxiety associated with loss. Therefore, of the choices presented, 'Improved sleep quality' would be the symptom that is least associated with family grief in extrafamilial relationships.
Studies have shown various symptoms associated with depression and grief, and these often include disruptions to regular sleep patterns, not improvements. Compounded by feelings of sadness, loss of interest, and physical issues such as headaches and anxiety, the grieving process is generally characterized by more challenging sleep experiences rather than better sleep.